Questionnaires were mailed to farmers in six counties of the
Willamette Valley requesting the kind and size of enterprises and the
gross income received from the enterprises on each farm.
Enterprises were defined both as general livestock or crop categories
and as individual crop or livestock enterprises. Two computer
programs...
Seep characteristics at different geologic settings are the subject of this review primarily based on results of the Research Consortium SFB 574. Criteria are drawn from examples on the erosive convergent margin off Costa Rica, the accretionary margin off Chile supplemented by examples from the transform margin of the Golf...
The San Vicente zinc lead deposit is located in the Eastern Andes of
Central Peru. The deposit is an epigenetic Mississippi Valley-type deposit
based on stratigraphic, geologic, petrographic, and geochemical evidence.
The dolomite host rocks of the Pucara Group are of Triassic-Jurassic
age. The source of metals are red sandstones...
This comprehensive bibliography is collection of refereed research related to climate change, wetlands and wetland restoration published before January 1, 2008.
Full Text:
Kevin L. Erwin, York University
2007
This comprehensive bibliography is a compilation of peer
Recent organic-rich deposits on the Peru continental margin
occur along the upper slope (100-450 m) between about ll°S and 16°S
and along the lower continental slope (>2000 m). The upper slope
deposits reflect high biological production in response to coastal
upwelling, but preservation of organic matter is enhanced by the...
The Blanco Trough, a deep depression located in the Blanco Fracture Zone near the intersection with the Juan de Fuca Ridge, contains unusual manganese-enriched layered sediments. Due to the Blanco Trough's bathymetric isolation and confinement, and its location in a tectonically active zone, three hypotheses concerning the origin and cause...
A challenge for municipal authorities of growing urban areas is to provide larger and faster transportation and utility networks that are safe and resilient to significant disruptions after an earthquake event and other disasters. Urban regions, like the San Francisco Bay or the Los Angeles area, are situated in seismically...
Over the past 10 years there has been much research
on various aspects of gender-role orientation.
Specifically, many studies have explored gender-role
orientation as a predictor of psychological adjustment.
Findings suggest that masculine and androgynous
individuals are high on psychological adjustment whereas,
feminine and undifferentiated individuals score lower on
adjustment....
Because of disease, industrialization, and regional conflicts, young widowhood is an expanding phenomenon in many parts of the world. Young widows face many challenges that can lead to mental health problems. The young widows have to make adjustments to fit their new roles as bread winners of the families, having...
Vineyards in Oregon’s Willamette Valley are predominately planted to perennial grass cover in the alleyways of vineyards. This grass cover is grown to increase worker and equipment traction, as well as reduce erosion and manage vine vegetative vigor. However, with increasing frequencies of drought and warming temperatures, the use of...
Prior to eruption at mid-ocean ridges, melts must travel through >6 km of crust from their origin in the mantle. The final composition of the melts is dependent on both the melting conditions and magmatic processes within the crust. While mid-ocean ridge basalt (MORB) glasses are commonly used to infer...
Sedimentation rate could become a new exploration tool for evaluating
the source rock potential of sedimentary basins in frontier regions.
Petroleum source rocks are defined on the basis of total organic carbon
by weight percent. An analysis of Deep Sea Drilling Project (DSDP)
cores indicates that there exists quantitative relationships...
Hydrate Ridge has the distinction of hosting the first documented subduction-driven cold seep system that supports chemosynthetic life by Anaerobic Oxidation of Methane as well as the most widely researched methane hydrate setting at any active continental margin. Today this site is a vital node of Northeast Pacific regional long-term...
This paper is divided in two parts: the first details technological and institutional developments in the shipping and port industry. The second part is a theoretical work which explores alternative ways to induce demand in the Honduras port system so as to increase the volume of cargo handled through its...
A computer program was developed for estimating construction
pore pressures in embankments without drainage at any location in
the embankment at any time during construction. This program incorporated
a modification of the Hilf-Brantz method of pore pressure
calculation and a finite element method of stress computation.
Previous methods of calculating...
This comprehensive bibliography is collection of refereed research related to climate change, wetlands and wetland restoration published before January 1, 2008.
Full Text:
Caribbean
coastal wetlands. Ecol Eng, 3: 171-186
Beever EA, Pyke DA, Chambers JC, Landau F and Smith SD
An experiment was designed to simulate field conditions of tansy
ragwort poisoning in cattle and horses.
Four calves and four ponies were fed pelleted feed containing 5%
Senecio jacobaea and two ponies and two calves were used as controls.
The feeding continued for two months. Following this, the chronic
delayed...
Sediments on the inner portion of the Oregon continental shelf
consist of clean, well-sorted, detrital sand. This sand has an average
median diameter of 2.53Φ (. 173 mm) and is both positively and
negatively skewed. Deposits with median diameters in the coarse
sand and gravel classes occur at depths of...
Authigenic carbonates and chemosymbiotic biota are archives of seepage 1 history and record paleo-environmental conditions at seep sites. Based on mineral and stable isotope compositions and U/Th-isotope systematics of seep carbonates and Calyptogena sp shell fragments from three seep sites located at 22°02' ~22°09'N, 118°43'~118°52'E (water depths: 473 m to...
This publication furnishes information that should be useful to 4-H Club leaders and members and other young people. It is intended to supplement subjectmatter material published by the various States and other agencies. The text emphasizes getting acquainted with forest trees and forest stands and learning their different values to...
Published January 1976. Reprinted March 1978. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
The primary purpose of this investigation was to characterize
the lipids of the spores and vegetative cells of Cl. botulinum. A
second purpose was to explore the possibility that lipids might serve
as a means of differentiating the chiefly proteolytic Cl. botulinum
type B from the nonproteolytic Cl. botulinum types...
Oxidized intervals of five organic‐rich Madeira Abyssal Plain (MAP) turbidites deposited during the Miocene, Pliocene, and Pleistocene all displayed comparable major loss of total organic carbon (TOC) (84 ± 3.1%) accompanied by a negative isotopic (δ¹³C) shift ranging from −0.3 to −2.9‰. Major but significantly lower loss of total nitrogen...
A temporal record of oxygen and NO3- concentrations in the bottom water of the Santa Barbara Basin indicates that outside waters spill over into the basin seasonally. It is proposed that an annual bottom-water cycle leads ultimately to varve production.
As evidence in support of a benthic mechanism for varve...
The term "interaction" in evolutionary biology and ecology
describes the relationships among variables in two classes of causal
models. In the first, "interaction" refers to the influence of a
single putatively causal variable on a variable of interest. In the
second class of models, the term applies when a third...
File scanned at 300 ppi (Monochrome) using ScandAll PRO 1.8.1 on a Fi-6670 in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Residual osteochondral debris represents a clinical problem associated
with arthroscopic debridement and curettage of joint surfaces. At the Oregon
State University Veterinary Teaching Hospital (OSU-VTH), during a period
from January, 1983 to August, 1986, incidence of radiographically recognizable
osteochondral debris in the carpal joints of postarthroscopic equine patients was
excessive....
Plagioclase ultraphyric basalts (PUBs) have been sampled along most mid-ocean ridges with
ultraslow to intermediate spreading rates. Over the past 40 years, the prevalent models for their origin
assume positive buoyancy of plagioclase in basaltic liquids resulting in selective concentration of
plagioclase phenocrysts by floatation. However, when the global population...
Full Text:
; Accepted 16 June 2013; Published 30 August 2013.
Lange, A. E., R. L. Nielsen, F. J. Tepley, III, and A. J
Objective: The purpose was to examine whether a one-hour intervention would help increase fruit consumption in motivated individuals and to study the role of self-regulatory mechanisms in the behavior change process, with a particular focus on dietary planning and action control.
Methods: A randomized controlled trial compared a one-hour online...
Nowadays selective separation processes are sought after more than ever before. They are indispensable to meet the growing demand for individual rare earth elements, minor actinides partitioned from fission-produced lanthanides, as well as, overall, more concentrated and high-purity products. This research focuses on such separation techniques as solvent extraction which...
Modern plant pathology benefits from integrating methods and concepts from evolutionary biology. For example, evolutionary concepts are used to identify and examine species boundaries of plant pathogens, recognize processes underlying pathogen biogeography, identify traits that characterize emerging species, and discover new molecular interactions that originate under processes of selection. In...
Submersible investigations of the Cascadia accretionary
complex have identified localized venting of methane gas
bubbles in association with gas hydrate occurrence. Acoustic
profiles of these bubble plumes in the water column in the
vicinity of Hydrate Ridge offshore Oregon provide new
constraints on the spatial distribution of these gas vents...
The fungitoxicity of acetone extracts from the xylem of Fusarium
wilt disease resistant tomato plants (cv. Jefferson) inoculated with Fusarium
oxysporum f. sp. lycopersici was greatly influenced by environmental
factors. Extracts obtained from plants 1 h after watering were 4-times
more toxic than extracts from plants subjected to water stress...
The role of estradiol- 17β, progesterone and prostaglandin F₂α (PGF₂α) in altering contractility of uterine vascular smooth muscle was investigated. A segment of uterine artery (3. 5 cm) supplying each uterine horn of ewes and heifers were removed at necropsy and perfused with oxygenated Krebs Henseleit Solution prior to initiating...
We reconstructed oxygenation changes in the upwelling ecosystem off Concepción (36° S), Chile, using inorganic and organic proxies in a sediment core covering the last ca. 110 years of sedimentation in this area. Authigenic enrichments of Mo, U and Cd were observed between ca. 1935 and 1971 CE, implying a...
Full Text:
., Sepúlveda, J., Lange, C. B., Muñoz, P., Summons, R. E.,
McKay, J., & Salamanca, M. (2015). Interdecadal
We reconstructed oxygenation changes in the Oxygen Minimum Zone of the upwelling ecosystem off Concepción (36° S), Chile, using inorganic and organic proxies in a sediment core covering the last ca. 110 years of sedimentation in this area. Authigenic enrichments of Mo, U and Cd were observed between ca. 1935–1971...
Full Text:
., Pantoja, S., Sepúlveda, J., Lange, C. B., Muñoz, P., Summons, R. E.,
McKay, J., and Salamanca, M. (2015
Revised July 1997. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
PCR amplification, restriction fragment length polymorphism, and phylogenetic analysis of oxygenase genes
were used for the characterization of in situ methane- and ammonia-oxidizing bacteria from free-living and
attached communities in the Eastern Snake River Plain aquifer. The following three methane monooxygenase
(MMO) PCR primer sets were used: A189-A682, which amplifies...
Published April 1917. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
To constrain the fluxes of methane (CH4) in the water column above the accretionary
wedge along the Cascadia continental margin, we measured methane and its stable carbon
isotope signature (δ¹³C-CH₄). The studies focused on Hydrate Ridge (HR), where
venting occurs in the presence of gas-hydrate-bearing sediments. The vent CH₄ has...
Geophysical and biogeochemical processes associated with fluid venting from active and passive continental margins will receive significant scientific and economic attention
into the next century and are of major societal relevance. An important unknown among these interrelated processes is the role played by methane gas hydrates, at and below the...
In this thesis anomalous downcore shallowing of paleomagnetic
inclinations is interpreted to be caused by sediment compaction. Thus,
compaction-induced inclination shallowing may influence tectonic
reconstructions that are based on inclinations from deep-sea sediment
cores.
Progressive downcore shallowing of the remanent inclination was
observed in a 120-m section of Plio- Pleistocene...
Phytophthora lateralis Tucker and Milbrath, causal agent of a serious fungus root rot of Chamaecyparis lawsoniana, has seriously damaged natural stands in southwestern Oregon forests and affected ornamentals throughout the Pacific Northwest. Progress with an effective control program in the field has been limited by lack of critical knowledge of...
Chamaecyparis lawsoniana, an extremely valuable timber tree
species, is highly susceptible to a serious, soil -borne root disease
caused by Phytophthora lateralis. Disease outbreaks of epidemic
proportions are continually causing high mortality in natural stands
of the host tree. Practical control measures rely on an understanding
of the many factors...
Within the last 15 years, wastewater treatment plants have increasingly begun to find radioactive isotopes incorporated in biosolids. Regulations concerning the disposal of radioactive material via sanitary sewer systems were in place since the early 1960's and recently were further restricted. However, the updated regulations would not have prevented certain...
Fluorinated alkyl substances, which can be persistent, toxic, and
bioaccumulative, have been quantitated in many densely populated and
remote regions, including in air, surface waters, groundwater, and biota;
however, little is known about their transport or behavior in the environment.
Wastewater effluent is one of the principal routes for introducing...
The purpose of this study was to locate and analyze experimental
studies of teacher training that tested elements of Bandura's
social learning theory. Bandura's theory emphasizes the role of
modeling in the acquisition of new modes of interpersonal behavior,
and it also provides for the integration of practice and feedback...
This paper discusses some important issues in constructing price indexes. The issues relate to
the choice of an index number formula. Which is a “good” index number formula for aggregating prices?
A variety of alternative index number formulae are explored based on the economic approach and the
axiomatic (test) approach....
The scope of this project was to build a high
energy impulse generator to be used for educational
and research purposes, such as small scale modeling
of lightning and switching surges or small scale
simulation of an electromagnetic pulse (EMP).
A one-stage impulse generator was designed to
deliver a voltage...
Three experiments compared ruminal, physiological, and performance responses of beef steers consuming hay ad libitum and receiving grain-based supplements with (CAM) or without (CO) inclusion of camelina meal. In Exp. 1, 9 steers fitted with ruminal cannulas received CAM (2.04 kg of DM/d) or CO (2.20 kg of DM/d). Steers...
Ninety-five oriented samples were obtained from nine Recent
Cascade lava flows in Oregon. Directions and intensities of remanent
magnetization were measured on a spinner magnetometer which measures
directions of magnetization to within 1.2° s.d. Angle measurements
were plotted graphically using an equal area projection. Mean
directions and statistics were calculated...
Online learning has grown exponentially within higher education in the past decade, especially at community colleges. As online course offerings expand community colleges need to assess student learning in order to ensure quality learning experiences for students and for accreditation purposes. The purpose of this study was to compare the...
Sepsis is an inflammatory reaction occurring throughout the human body to infections caused by bacteria, fungi, and or other forms of pathogens. It is essential to find an alternative treatment method for sepsis, to lessen the dependence on antibiotics. Hemoperfusion is an absorbent device that removes select targets from blood,...
The structure of the Royal Anne cherry cuticle (Prunus avium
L.) and its penetration by a SO₂-calcium bisulfite brine was determined. The structural features of the cuticle are interpreted in the
light of its possible significant to cuticular penetration.
The morphology of the cuticle was determined by standard
histological and...
Background: Prior research has shown that distance learning courses have higher failure rates at community colleges then equivalent face-to-face to courses. There are a few programs and courses, however, that consistently achieve completion rates as high as or higher than their equivalent face-to-face courses. The research to date has not...
The literature clearly indicates that pharmacist monitoring of
hospital patients by use of a patient profile is needed. The literature
does not, however, describe a method of selecting the information to
be included on the profile. Since monitoring needs vary from hospital
to hospital, a method of identifying specific needs...
The two-fold purpose of this study was to identify critically important factors that affect the
meaningful assessment of student learning outcomes and study why they were critically
important. A three-round Delphi process was used in both a pilot project and in a full study to
solicit the opinions of individuals...
There are many situations in which contact between two
bodies is at a single point so there can be no tensile
(force). This form of contact only provides a single degree
of restraint, and is defined as a unidirectional point
contact. The analysis of Reuleaux shows that four suitably
placed...
Biodiversity loss is of global concern, and is due in part to deforestation and high consumer demand for wood and wood products. The neotropical tree species Cedrela odorata (“Spanish cedar” or “cedro”) is economically valuable for its wood and faces threats of overexploitation. Due to strong similarities in wood features...
Two-year chemistry-based technology training (CBTT) programs in the U.S. are important in the preparation of the professional technical workforce. The purpose of this study was to identify, examine, and analyze factors related to the economic sustainability of CBTT programs. A review of literature identified four clustered categories of 31 sub-factors...
Three trends are occurring today in the United States which inspired this research. First, America is growing increasingly urbanized. Today, more Americans are living in cities than in rural environments, and this pattern is predicted to continue for the foreseeable future. Urban living has benefits, but there are also challenges...
Forest carnivores such as the fisher have frequently been the target of conservation concern due to their association with older forests and assumed sensitivity to landscape-level habitat alteration. Although the fisher has been extirpated from most of its former range in the western U.S., it is still found throughout much...
Background: Calls by presidents and legislators to raise the U.S. college graduation rate to 60% by 2025 have required educational institutions to find ways to increase accessibility and quality while simultaneously reducing costs (Bautsch, 2018; Smith, 2017). Private foundations such as the Bill and Melinda Gates Foundation are getting involved...